<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>函数累加和</title>
</head>
<body>
    <!-- 利用函数计算 1-100之间的累加和 -->
    <script>
        function getSum(){
            var sum = 0;
            for (var i = 1; i <= 100; i++){
                sum += i;
            }
            console.log(sum);
        }
        getSum(); // 可以多次调用 哪里需要哪里调用
    </script>
</body>
</html>